diff --git a/home-manager/modules/sway/default.nix b/home-manager/modules/sway/default.nix
index 5f0f5f4..9ef0fd5 100644
--- a/home-manager/modules/sway/default.nix
+++ b/home-manager/modules/sway/default.nix
@@ -204,7 +204,7 @@ in
         #"Shift_R+Shift" = "exec ${pkgs.dbus}/bin/dbus-send --session --type=method_call --dest=net.sourceforge.mumble.mumble / net.sourceforge.mumble.Mumble.stopTalking";
 
 
-        "XF86AudioMute" = "exec pactl set-source-mute alsa_input.usb-BEHRINGER_UMC202HD_192k-00.analog-stereo-input toggle";
+        "XF86AudioMute" = "exec pactl set-source-mute UMC202HD_input1 toggle";
 
         "${cfg.modifier}+l" = "exec ${pkgs.swaylock}/bin/swaylock -f -i ${wallpaper}";
       };
diff --git a/modules/pipewire.nix b/modules/pipewire.nix
index 8749d8f..1062291 100644
--- a/modules/pipewire.nix
+++ b/modules/pipewire.nix
@@ -1,5 +1,10 @@
 { config, lib, pkgs, ... }:
 
+let
+  defaults = {
+    media-session = (builtins.fromJSON (builtins.readFile "${pkgs.pipewire-media-session}/nix-support/media-session.conf.json"));
+  };
+in
 lib.mkIf config.myConfig.gui.enable {
   sound.enable = true;
   hardware.pulseaudio.enable = false;
@@ -25,4 +30,43 @@ lib.mkIf config.myConfig.gui.enable {
     pavucontrol
     pulseaudio # pacmd and pactl
   ];
+
+  # Split U-PHORIA inputs into mono channels
+  # https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Virtual-Devices#behringer-umc404hd-micguitar-virtual-sources
+  services.pipewire.media-session.config.media-session."context.modules" = defaults.media-session."context.modules" ++ [
+    {
+      name = "libpipewire-module-loopback";
+      args = {
+        "node.name" = "UMC202HD_input1";
+        "node.description" = "UMC202HD Input 1";
+        "capture.props" = {
+          "audio.position" = [ "AUX0" ];
+          "stream.dont-remix" = true;
+          "node.target" = "alsa_input.usb-BEHRINGER_UMC202HD_192k-00.pro-input-0";
+          "node.passive" = true;
+        };
+        "playback.props" = {
+          "media.class" = "Audio/Source";
+          "audio.position" = [ "MONO" ];
+        };
+      };
+    }
+    {
+      name = "libpipewire-module-loopback";
+      args = {
+        "node.name" = "UMC202HD_input2";
+        "node.description" = "UMC202HD Input 2";
+        "capture.props" = {
+          "audio.position" = [ "AUX1" ];
+          "stream.dont-remix" = true;
+          "node.target" = "alsa_input.usb-BEHRINGER_UMC202HD_192k-00.pro-input-0";
+          "node.passive" = true;
+        };
+        "playback.props" = {
+          "media.class" = "Audio/Source";
+          "audio.position" = [ "MONO" ];
+        };
+      };
+    }
+  ];
 }
diff --git a/pkgs/mute-indicator/pulseaudio_mute_indicator/service.py b/pkgs/mute-indicator/pulseaudio_mute_indicator/service.py
index 0ef8e51..cb5feaf 100644
--- a/pkgs/mute-indicator/pulseaudio_mute_indicator/service.py
+++ b/pkgs/mute-indicator/pulseaudio_mute_indicator/service.py
@@ -3,25 +3,25 @@ import serial
 
 
 def run():
+    source_to_led_mapping = {
+        "UMC202HD_input1": 0,
+        "UMC202HD_input2": 1,
+    }
+
     with pulsectl.Pulse("event-printer") as pulse:
 
         def print_events(ev):
             with pulsectl.Pulse("event-source-info") as pulse2:
                 source = pulse2.source_info(ev.index)
-            if source.name in [
-                "alsa_input.usb-BEHRINGER_UMC202HD_192k-00.analog-stereo",
-                "alsa_input.usb-BEHRINGER_UMC202HD_192k-00.analog-stereo-input",
-            ]:
+            if source.name in source_to_led_mapping.keys():
                 muted = bool(source.mute)
+                led = source_to_led_mapping[source.name]
                 with serial.Serial(port="/dev/mute-indicator", baudrate=115200) as ser:
                     if muted:
-                        ser.write("L0:32,0,0\n".encode())
-                        ser.write("L1:32,0,0\n".encode())
-                        ser.write("S\n".encode())
+                        ser.write(f"L{led}:32,0,0\n".encode())
                     else:
-                        ser.write("L0:0,32,0\n".encode())
-                        ser.write("L1:0,32,0\n".encode())
-                        ser.write("S\n".encode())
+                        ser.write(f"L{led}:0,32,0\n".encode())
+                    ser.write("S\n".encode())
 
         pulse.event_mask_set("source")
         pulse.event_callback_set(print_events)